A scraping method for the inner wall of a steel sheet without residual glue

Abstract

The present invention provides a scraping and fitting method for the inner wall of a steel sheet without residual glue, which enables the single-sided adhesive to only adhere to the set area of the long groove, ensuring that no residual glue is exposed on the inner wall of the groove. It is applicable to products with long grooves provided at the ends of the surface, and is characterized in that: a protective film is attached to the upper surface of the single-sided adhesive corresponding to the long groove, and the corresponding end side of the protective film protrudes from the end of the single-sided adhesive; one side of the bottom of the adopted scraper is configured to conform to the inner wall contour of the long groove, and the other side is retracted relative to the outer wall of the long groove; after the rest of the single-sided adhesive is laid and pressed on the surface of the product, the single-sided adhesive at the end in the width direction is arranged directly above the long groove, and the scraper is pressed obliquely downward from top to bottom towards the bottom of the inner wall, so that the single-sided adhesive does not come into contact with the bottom wall of the long groove due to the stop interference of the protective film and the outer wall, and then the scraper moves vertically downward, so that the single-sided adhesive conforms to the bottom wall in imitation.

Description

Technical Field

[0001] The present invention relates to the technical field of scraping and pasting, and specifically to a scraping method for the inner wall of a steel sheet without residual glue. Background Art

[0002] For existing steel sheet products with long strip grooves, during assembly, the adhesive surface part of the single-sided adhesive needs to be inserted into the long strip groove and then adhered to the opposite inner side wall and the area near the inner side wall of the bottom wall of the long strip groove. During actual adhesion, a scraper imitating the bottom and the long strip groove is configured in the existing method, and a protective film is laid on the upper surface of the single-sided adhesive. The width end cross-section of the protective film and the width end cross-section of the single-sided adhesive are flush with each other. First, the single-sided adhesive is adhered to the flat area of the steel sheet product through overall pressing. At this time, the single-sided adhesive together with the protective film is suspended directly above the long strip groove. Then, the bottom of the scraper moves downward for pressing operation, so that the single-sided adhesive deforms and adheres to the opposite inner side wall and the area near the inner side wall of the bottom wall of the long strip groove. However, in this process, due to the downward pressing of the scraper, the end of the single-sided adhesive will be adhered outside the non-set pasting area only due to being vertically pressed downward. Then, the profiling end of the scraper is reset to fit the corresponding position of the long strip groove, which causes residual glue exposed in the long strip groove of the steel sheet. Therefore, it is urgent to find a corresponding method to solve this problem. Summary of the Invention

[0003] In view of the above problems, the present invention provides a scraping method for the inner wall of a steel sheet without residual glue, which enables the single-sided adhesive to only adhere to the set area of the long strip groove, ensuring that no residual glue is exposed on the inner wall of the groove.

[0004] A scraping method for the inner wall of a steel sheet without residual glue, which is applicable to products with long strip grooves provided at the ends of the surface, is characterized in that: a protective film is attached to the upper surface of the single-sided adhesive corresponding to the long strip groove, and the corresponding end side of the protective film protrudes from the end of the single-sided adhesive; one side of the bottom of the adopted scraper is profiled according to the inner side wall contour of the long strip groove, and the other side is retracted relative to the outer side wall of the long strip groove; after the rest of the single-sided adhesive is flatly pressed on the surface of the product, the single-sided adhesive at the end in the width direction is arranged directly above the long strip groove, and the scraper presses obliquely downward from top to bottom towards the bottom of the inner side wall, so that the single-sided adhesive does not come into contact with the bottom wall of the long strip groove due to the blocking interference of the protective film and the outer side wall. Then, the scraper moves vertically downward, so that the single-sided adhesive is profiled and adhered to the bottom wall.

[0005] It is further characterized in that:

[0006] The position of the bottom of the scraper corresponding to the outer side wall is a guiding inclined surface, and there is a gap between the widest part at the upper part of the guiding inclined surface and the outer side wall, ensuring a movement space during the downward pressing process;

[0007] After the initial state of the squeegee presses the single-sided adhesive at one end in the length direction in place, the squeegee translates along the length direction of the long groove for scraping operation, and the scraping action maintains at least one reciprocating action;

[0008] The squeegee is a plastic squeegee, and the edge of its bottom outer surface has no sharp edge to ensure the integrity of the protective film;

[0009] The side convex dimension of the corresponding end of the protective film protruding from the end of the single-sided adhesive is 0.2 mm to 0.4 mm;

[0010] Preferably, the corresponding end of the protective film protrudes 0.3 mm from the end of the single-sided adhesive;

[0011] Both sides of the squeegee are made into the same side, and are both arranged to imitate the surface contour of the inner wall, so that both sides of the squeegee can be used;

[0012] The protective film has hardness and will only deform when subjected to external force. Therefore, the protective film and the single-sided adhesive maintain their original state without external force;

[0013] The single-sided adhesive is folded and wrapped around the remaining plane of the product and extends to directly below the plane of the product. A Teflon layer is provided directly below the corresponding position of the remaining plane of the product;

[0014] The upper surface of the Teflon layer is adhered with double-sided adhesive, the lower surface of the Teflon layer is covered with a bottom film, and the upper layer of the double-sided adhesive is adhesively connected to the corresponding position of the lower surface of the single-sided adhesive.

[0015] After adopting the present invention, a protective film with a width greater than that of the single-sided adhesive is provided at the surface position of the single-sided adhesive corresponding to the long groove, so that the protective film protrudes from the single-sided adhesive. At the same time, the non-force-bearing side of the squeegee is retracted, so that there is enough space when the squeegee presses obliquely downward. The squeegee presses obliquely downward from top to bottom towards the bottom of the inner wall, so that the single-sided adhesive will not contact the bottom wall of the long groove due to the stop interference of the protective film and the outer wall. Then the squeegee moves vertically downward, so that the single-sided adhesive conforms to the bottom wall. It makes the single-sided adhesive only adhere to the set area of the long groove, ensuring that no residual glue is exposed on the inner wall of the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic process flow diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] A scraping method without residual glue on the inner wall of a steel sheet is applicable to a product with a long groove provided at the end of the surface, as shown in Figure 1:The upper surface of the single-sided adhesive tape 1 corresponding to the long strip groove 10 is attached with a protective film 2, and the corresponding end side of the protective film 2 protrudes from the end of the single-sided adhesive tape 1; the bottom side of the scraping plate 3 used is shaped according to the contour of the inner side wall 11 of the long strip groove 10, and the other side of the bottom of the scraping plate 3 is retracted relative to the outer side wall 12 of the long strip groove 10; after the rest of the single-sided adhesive tape 1 is flatly pressed on the surface of the product 20, the single-sided adhesive tape 1 at the end in the width direction is arranged directly above the long strip groove 10, and the scraping plate 3 is pressed obliquely downward from top to bottom towards the bottom of the inner side wall 11, so that the single-sided adhesive tape 1 does not come into contact with the non-pasting area of the bottom wall of the long strip groove 10 due to the blocking interference of the protective film 2 and the outer side wall 12. Then, the scraping plate 3 moves vertically downward, so that the single-sided adhesive tape 1 is conformally attached to the bottom wall 13.

[0018] During specific implementation, the position of the bottom of the scraping plate 3 corresponding to the outer side wall 12 is a guiding inclined surface 31, and there is a gap between the widest part at the upper part of the guiding inclined surface 31 and the outer side wall 12 to ensure there is movement space during the downward pressing process;

[0019] After the scraping plate 3 presses the single-sided adhesive tape 1 at one end in the length direction in place in the initial state, the scraping plate 3 is translated along the length direction of the long strip groove 10 for scraping operation, and the scraping action is at least maintained for one round-trip motion. During specific implementation, the reciprocating motion is 2 to 3 times;

[0020] The scraping plate 3 is a plastic material scraping plate, and there is no sharp edge at the edge of the outer surface of its bottom to ensure the integrity of the protective film 2;

[0021] The side convex dimension D of the corresponding end side of the protective film 2 protruding from the end of the single-sided adhesive tape 1 is 0.3 mm;

[0022] Both sides of the scraping plate 3 are made into the same side surface and are shaped according to the surface contour of the inner side wall 11, so that both sides of the scraping plate 3 can be used;

[0023] The protective film 2 has a certain hardness and will only deform when subjected to an external force. Therefore, the protective film 2 and the single-sided adhesive tape 1 maintain their original states when not subjected to an external force;

[0024] The single-sided adhesive tape 1 is folded and wrapped around the rest of the plane of the product 20 and extends to directly below the plane of the product 20. A Teflon layer 4 is provided directly below the corresponding position of the rest of the plane of the product 20;

[0025] The upper surface of the Teflon layer 4 is adhered with a double-sided adhesive tape 5, the lower surface of the Teflon layer 4 is covered with a bottom film 6, and the upper layer of the double-sided adhesive tape 5 is adhesively connected to the corresponding position of the lower surface of the single-sided adhesive tape 1.

[0026] The principle is as follows: A protective film with a width greater than that of the single-sided adhesive is provided at the surface position of the single-sided adhesive corresponding to the long strip groove, so that the protective film protrudes laterally from the single-sided adhesive. At the same time, the non-force-bearing side of the squeegee is retracted, so that there is enough space when the squeegee is pressed obliquely downward. The squeegee is pressed obliquely downward from top to bottom towards the bottom of the inner side wall, so that the single-sided adhesive does not come into contact with the bottom wall of the long strip groove due to the stop interference of the protective film and the outer side wall. Then the squeegee moves vertically downward, so that the single-sided adhesive is conformally attached to the bottom wall, which makes the single-sided adhesive only adhere to the set area of the long strip groove, ensuring that no residual adhesive is exposed on the inner wall of the groove.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A scraping method for the inner wall of a steel sheet without residual glue, which is applicable to products with long strip grooves provided at the ends of the surface, and is characterized in that: The upper surface of the single-sided adhesive corresponding to the long strip groove is attached with a protective film, and the corresponding end side of the protective film protrudes from the end of the single-sided adhesive; one side of the bottom of the scraper used is shaped according to the inner wall contour of the long strip groove, and the other side is retracted relative to the outer wall of the long strip groove; after the rest of the single-sided adhesive is flattened and pressed on the surface of the product, the single-sided adhesive at the end in the width direction is arranged directly above the long strip groove, and the scraper is pressed obliquely downward from top to bottom towards the bottom of the inner wall, so that the single-sided adhesive does not come into contact with the bottom wall of the long strip groove due to the stop interference of the protective film and the outer wall, and then the scraper moves vertically downward, so that the single-sided adhesive is shaped and attached to the bottom wall; The position of the bottom of the scraper corresponding to the outer wall is a guiding inclined surface, and there is a gap between the widest part at the upper part of the guiding inclined surface and the outer wall; The protective film has hardness and will only deform when subjected to an external force, so the protective film and the single-sided adhesive maintain their original state without an external force.

2. The scraping method for the inner wall of a steel sheet without residual glue as described in claim 1, characterized in that: After the scraper presses the single-sided adhesive at one end in the length direction in place in the initial state, the scraper moves horizontally along the length direction of the long strip groove for scraping operation, and the scraping action is at least maintained for one round-trip motion.

3. A scraping method for the inner wall of a steel sheet without residual glue as described in claim 1, characterized in that: The scraper is a plastic scraper, and there is no sharp edge at the edge of the outer surface of its bottom.

4. A scraping method for the inner wall of a steel sheet without residual glue as described in claim 1, characterized in that: The side convex size of the corresponding end side of the protective film protruding from the end of the single-sided adhesive is 0.2 mm to 0.4 mm.

5. The scraping method for the inner wall of a steel sheet without residual glue as described in claim 4, characterized in that: The corresponding end side of the protective film protrudes 0.3 mm from the end of the single-sided adhesive.

6. A scraping method for the inner wall of a steel sheet without residual glue as described in claim 1, characterized in that: Both sides of the scraper are made into the same side and are shaped according to the surface contour of the inner wall, so that both sides of the scraper can be used.

7. A scraping method for the inner wall of a steel sheet without residual glue as described in claim 1, characterized in that: The single-sided adhesive is folded and wrapped around the rest of the plane of the product and extends to directly below the plane of the product, and a Teflon layer is provided directly below the corresponding position of the rest of the plane of the product.

8. A scraping method for the inner wall of a steel sheet without residual glue as described in claim 7, characterized in that: The upper surface of the Teflon layer is adhered with a double-sided adhesive, the lower surface of the Teflon layer is covered with a bottom film, and the upper layer of the double-sided adhesive is adhesively connected to the corresponding position of the lower surface of the single-sided adhesive.

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